@Override
public void createTransaction(CreateTxnRequest request, StreamObserver<Controller.CreateTxnResponse> responseObserver) {
Controller.CreateTxnResponse.Builder builder = Controller.CreateTxnResponse.newBuilder();
if (request.getStreamInfo().getStream().equals("stream1")) {
builder.setTxnId(TxnId.newBuilder().setHighBits(11L).setLowBits(22L).build());
builder.addActiveSegments(ModelHelper.createSegmentRange("scope1", "stream1", 0, 0.0, 0.5));
builder.addActiveSegments(ModelHelper.createSegmentRange("scope1", "stream1", 1, 0.5, 1.0));
responseObserver.onNext(builder.build());
responseObserver.onCompleted();
} else if (request.getStreamInfo().getStream().equals("stream2")) {
builder.addActiveSegments(ModelHelper.createSegmentRange("scope1", "stream2", 0, 0.0, 1.0));
builder.setTxnId(TxnId.newBuilder().setHighBits(33L).setLowBits(44L).build());
responseObserver.onNext(builder.build());
responseObserver.onCompleted();
} else {
responseObserver.onError(Status.INTERNAL.withDescription("Server error").asRuntimeException());
}
}